these 2 derivations will be built:
  /nix/store/hr10wb9n05nqhgij8jgjly65by02ps0p-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/1iprjrza15bx3iwmx1r1054v0pgn6ak3-vm-test-run-wrappers-regression-PSQL-1387.drv